XListview

xListView.setXListViewListener(new XListView.IXListViewListener() {

            //刷新回调的接口
            @Override
            public void onRefresh() {
                type=1;
                //重新请求第一页的数据 10条数据
                pageIndex=1;
                String url="http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=10&page="+pageIndex;

                new MyTask().execute(url);

            }
            //加载更多回调的接口
            @Override
            public void onLoadMore() {
                type=2;
                pageIndex++;
                //进行地址的拼接
                String url="http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=10&page="+pageIndex;

                //执行异步请求
               new MyTask().execute(url);

            }
        });

 if(type==1){//代表刷新
                //如果是刷新的话
                datas.clear();//清除原有的数据
                datas.addAll(result.getData());//添加新的数据
                setAdapter();

                //关闭xlistview的头部视图--延迟关闭
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        xListView.stopRefresh();//关闭

                        Date date=new Date(System.currentTimeMillis());
                        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                        String s=sdf.format(date);
                        xListView.setRefreshTime(s);//设置刷新时间
                    }
                },1000);

            }else if(type==2){//代表加载更多
                //得到数据
                datas.addAll(result.getData());//datas.addAll(0,result.getData());//将新请求的数据添加到集合的最前面
                //设置适配器
                setAdapter();
                //关闭xlistview的底部视图--延迟关闭
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        xListView.stopLoadMore();
                    }
                },1000);

            }else{

            }